Respiratory

Amplitude (Amp)- pressure of the breath

Hertz (HTZ)- 1 HTZ= 60 breaths/min

Mean Airway Pressure (MAP)- Middle of the pressure wave (cm. of water)

Inspiratory Time (IT)- length of time of inspiration. On an Oscillator it is the ratio of IT vs ET (Expiratory Time).

Here is a video from an RT from the hospital where I did my nursing clinicals.

Youtube, and your friendly neighborhood RT!

I'm a friendly neighborhood RT!

On the jet/oscillator, the MAP and FiO2 are for oxygenation and hertz, Ti, and amplitude (delta P) are for ventilation.

For blood gas analysis, I love when an RN wants to know more. I could talk about blood gases all day. The most important thing is to look beyond the pH and recognize that there are two or even three primary problems.

If you have specific blood gas questions, I'd be happy to answer them.

For HFOV ( I don't use jet) FiO2 and MAP affect PaO2/saturations. Delta p/amp affects CO2. Technically, hz can be used as well, but typically, it's just set at either 12 (bigger baby) or 15 (smaller baby). Hz is really just finding what the baby likes. We don't usually adjust that much.

Ventilation/oxygenation are much more separated with HFOV than they are with CMV.

When I was first starting out, I thought of it almost like this: your MAP is almost like the PEEP (it's not exactly, but it is a constant inflation amount) and then the amp is like a trampoline that goes above and below that line. The number determines how high that jump is.